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Retraction Note: Comparison of bone morphogenetic protein and autologous grafting in the treatment of limb long bone nonunion: a systematic review and meta-analysis

Crossref DOI link: https://doi.org/10.1186/s13018-021-02491-6

Published Online: 2021-05-29

Published Print: 2021-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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